Approve queued sends awaiting review

Approves queued sends that are waiting for review: each row in approval_required moves to scheduled and goes out at its scheduled time. Only sends belonging to campaigns you own can be approved. The answer reports every id you passed: approved are the ones that moved, ignored are your sends in a state approval cannot move (already scheduled, sent, skipped, stopped or overwritten), and notFound are ids that do not exist, are not yours, or belong to a deleted campaign. Approving is the one decision that causes a message to be sent. Rate limit: 30 requests/minute and 1,000/day per token owner, shared by every campaign, scheduled-send, campaign-template and knowledge-hub endpoint.

Errors:

• 422 VALIDATION_FAILED — sendIds is missing, empty, longer than 100, contains a duplicate, or an entry is not a 24-character hex id; param names the field.
• 429 RATE_LIMITED — More than 30 campaign requests in a minute, or 1,000 in a day, for this token owner (the bucket is shared by every /business/campaigns, /business/scheduled-sends, /business/campaign-templates and /business/knowledge-hubs call).
• 500 UNEXPECTED_ERROR — An unhandled failure; the detail stays in our logs and is never returned.

Requires one of the following token scopes: campaigns.